Not understanding something is not a virtue, not something to act smug and superior about.
"It's like wishing for java programs to be able to execute without JVM, or Erlang-code without BEAM."
No, it's not like that.
"Org-mode is written in Elisp, of course it needs Emacs to run."
There are (incomplete of course) apps outside of emacs and elisp that process org-mode files. And even if there weren't, it makes sense to wish that there were. In the mind of a clear and competent thinker, the mere fact that org-mode needs emacs to run is not a reason not to wish it weren't.
I'm sorry that I sounded like acting smug, I'm honestly just trying to understand what you're wishing for. An external (non-elisp) org-mode parser or something? I don't get your last paragraph in your latest response, like at all.
I have a project for hosting org-roam-ui as a website that took a ton of finagling to figure out and is extremely brittle. I had to finally load a custom .el script to prepare emacs to even try to evaluate the 'org-roam-ui' command from the commandline. If emacs prioritized headless / cli operations, this wouldn't have been such a nightmare, but it absolutely was. Just finding the right ports and re-assigning them to get out of each others way was a huge learning curve even for a seasoned emacs-er.
> It's like wishing for java programs to be able to execute without JVM, or Erlang-code without BEAM
No, it's not. It's wishing for basic functionality offered by all other markup languages of which I'm aware. That includes latex and everything supported by pandoc. Org-mode can do all sorts of crazy rendering tasks from its files, and it is worse than pulling teeth to get that functionality into a build pipeline of any kind.
What are you even talking about? It's like wishing for java programs to be able to execute without JVM, or Erlang-code without BEAM. While that's theoretically possible to a certain degree (using Graal and Lumen), it's not easily achievable.
Org-mode is written in Elisp, of course it needs Emacs to run. You just need Emacs executable and you can absolutely run scripts in batch mode. I have done it many times, running tests on GitHub Actions, etc.